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Segment Protection
Segment protection is a type of backup technique that can be used in most networks. It can be implemented as a dedicated backup or as a shared backup protection. Overlapping segments and non-overlapping segments are allowed; each providing different advantages. Technique Terms #Working path - is the chosen route from source to destination. #Segment protection path - is the working path where the broken segment is using the protected path. #Primary segment - is a segment of the working path. #Protected segment - is the backup path of one segment. #End-to-end protection - is the protection of one segment where is source and destination are also the end points of the backup protection. Saradhi, C.V.; Murthy, C.S.R.; , "Segmented protection paths in WDM mesh networks," High Performance Switching and Routing, 2003, HPSR. Workshop on , vol., no., pp. 311- 316, 24–27 June 2003 doi: 10.1109/HPSR.2003.1226724 Examples In "Working path" animation on the right it can be seen that for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Working Path Segment Protection
Working may refer to: * Work (human activity), intentional activity people perform to support themselves, others, or the community Arts and media * Working (musical), ''Working'' (musical), a 1978 musical * Working (TV series), ''Working'' (TV series), an American sitcom * Working (Caro book), ''Working'' (Caro book), a 2019 book by Robert Caro * Working (Terkel book), ''Working'' (Terkel book), a 1974 book by Studs Terkel * ''Working!!'', a manga by Karino Takatsu * Working (song), "Working" (song), by Tate McRae and Khalid, 2021 Engineering and technology * Cold working or cold forming, the shaping of metal below its recrystallization temperature * Hot working, the shaping of metal above its recrystallization temperature * Multiple working, having more than one locomotive under the control of one driver * Live-line working, the maintenance of electrical equipment while it is energised * Single-line working, using one train track out of two Other uses * Holbrook Working (1895†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segment A
Segment or segmentation may refer to: Biology *Segmentation (biology), the division of body plans into a series of repetitive segments **Segmentation in the human nervous system *Internodal segment, the portion of a nerve fiber between two Nodes of Ranvier *Segment, in fruit anatomy, a section of a citrus fruit *Parts of a genome, especially in virology Computing and communications * Memory segmentation, the division of computer memory into segments ** Segment descriptor ** Data segment ** Code segment * Image segmentation, the process of partitioning a digital image into multiple segments *Time-series segmentation, the process of partitioning a time-series into a sequence of discrete segments in order to reveal the underlying properties of its source * Network segmentation, splitting a computer network into subnetworks ** Network segment * Packet segmentation, the process of dividing a data packet into smaller units **Segmentation and reassembly * TCP segmentation, the process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Segment B
Segment or segmentation may refer to: Biology *Segmentation (biology), the division of body plans into a series of repetitive segments **Segmentation in the human nervous system *Internodal segment, the portion of a nerve fiber between two Nodes of Ranvier *Segment, in fruit anatomy, a section of a citrus fruit *Parts of a genome, especially in virology Computing and communications * Memory segmentation, the division of computer memory into segments ** Segment descriptor ** Data segment ** Code segment * Image segmentation, the process of partitioning a digital image into multiple segments *Time-series segmentation, the process of partitioning a time-series into a sequence of discrete segments in order to reveal the underlying properties of its source * Network segmentation, splitting a computer network into subnetworks ** Network segment * Packet segmentation, the process of dividing a data packet into smaller units **Segmentation and reassembly * TCP segmentation, the process ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Overlapping Protection
Overlap may refer to: * In set theory, an overlap of elements shared between sets is called an intersection, as in a Venn diagram. * In music theory, overlap is a synonym for reinterpretation of a chord at the boundary of two musical phrases * Overlap (railway signalling), the length of track beyond a stop signal that is proved to be clear of obstructions as a safety margin * Overlap (road), a place where multiple road numbers overlap * Overlap (term rewriting), in mathematics, computer science, and logic, a property of the reduction rules in term rewriting systems * Overlap add, an efficient convolution method using FFT * Overlap coefficient, a similarity measure between sets * Orbital overlap, important concept in quantum mechanics describing a type of orbital interaction that affects bond strength Overlapping can refer to: * "Reaching over", term in Schenkerian theory, see Schenkerian analysis#Lines between voices, reaching over See also * Overlay (other) * Ove ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shared Protection
Shared may refer to: * Sharing * Shared ancestry or Common descent * Shared care * Shared-cost service * Shared decision-making in medicine * Shared delusion, various meanings * Shared government * Shared intelligence or collective intelligence * Shared library * Shared morality * Shared ownership * Shared parenting or shared custody * Shared property * Shared reading * Shared secret * Shared services * Shared universe, in fiction * Shared vision planning, in irrigation * Shared workspace Science and technology * Shared medium, in telecommunication * Shared neutral, in electric circuitry * Shared pair, in chemistry *Shared vertex (or shared corner or common corner), point of contact between polygons, polyhedra, etc. *Shared edge, line of contact between polygons, polyhedra, etc. Computing * Shared agenda, in groupware * Shared computing * Shared desktop * Shared data structure * Shared IP address * Shared memory architecture * Shared memory (interprocess commu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shortest Path
In graph theory, the shortest path problem is the problem of finding a path between two vertices (or nodes) in a graph such that the sum of the weights of its constituent edges is minimized. The problem of finding the shortest path between two intersections on a road map may be modeled as a special case of the shortest path problem in graphs, where the vertices correspond to intersections and the edges correspond to road segments, each weighted by the length of the segment. Definition The shortest path problem can be defined for graphs whether undirected, directed, or mixed. It is defined here for undirected graphs; for directed graphs the definition of path requires that consecutive vertices be connected by an appropriate directed edge. Two vertices are adjacent when they are both incident to a common edge. A path in an undirected graph is a sequence of vertices P = ( v_1, v_2, \ldots, v_n ) \in V \times V \times \cdots \times V such that v_i is adjacent to v_ for 1 \leq i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Link Protection
Link protection is designed to safeguard networks from failure. Failures in high-speed networks have always been a concern of utmost importance. A single fiber cut can lead to heavy losses of traffic and protection-switching techniques have been used as the key source to ensure survivability in networks. Survivability can be addressed in many layers in a network and protection can be performed at the physical layer (SONET/SDH, Optical Transport Network), Layer 2 ( Ethernet, MPLS) and Layer 3 ( IP). Protection architectures like Path protection and Link protection safeguard the above-mentioned networks from different kinds of failures. In path protection, a backup path is used from the source to its destination to bypass the failure. In Link protection, the end nodes of the failed link initiate the protection. These nodes detect the fault responsible to initiate the protection mechanisms in order to detour the affected traffic from the failed link onto predetermined reserved path ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Path Protection
Path protection in telecommunications is an end-to-end protection scheme used in connection oriented circuits in different network architectures to protect against inevitable failures on service providers’ network that might affect the services offered to end customers. Any failure occurred at any point along the path of a circuit will cause the end nodes to move/pick the traffic to/from a new route. Finding paths with protection, especially in elastic optical networks, was considered a difficult problem, but an efficient and optimal algorithm was proposed. Other techniques to protect telecommunications networks against failures are: Channel Protection, Link Protection, Segment-Protection, and P-cycle Protection Path protection in ring-based networks In ring-based networks topology where the setup is to form a closed loop among the Add Drop Multiplexers, there is basically one path related ring protection scheme available in Unidirectional Path-Switched Ring archit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
P-cycle Protection
The p-Cycle protection scheme is a technique to protect a mesh network from a failure of a link, with the benefits of ring like recovery speed and mesh-like capacity efficiency, similar to that of a shared backup path protection (SBPP). p-Cycle protection was invented in late 1990s, with research and development done mostly by Wayne D. Grover, and D. Stamatelakis.Asthana, R.; Singh, Y.N.; Grover, W.D.; , "p-Cycles: An overview," IEEE Communications Surveys and Tutorials , vol.12, no.1, pp.97-111, First Quarter 2010 Overview of the p-Cycle In Transport communication networks two methods were developed and introduced for restoration and recovery, one was a ring-based protection and the other was mesh restoration.Claus G. Gruber and Dominic A. Schupke.; , "Capacity-efficient Planning of Resilient Networks with p-Cycles,". 2002. The ring based protection offered a quick recovery time at the expense of higher capacity redundancy, while the mesh restoration offered better capacity-ef ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Optical Mesh Networks
An optical mesh network is a type of optical telecommunications network employing wired fiber-optic communication or wireless free-space optical communication in a mesh network architecture. Most optical mesh networks use fiber-optic communication and are operated by internet service providers in metropolitan and regional but also national and international scenarios. They are faster and less error prone than other network architectures and support backup and recovery plans for established networks in case of any disaster, damage or failure. Currently planned satellite constellations aim to establish optical mesh networks in space by using wireless laser communication. History of transport networks Transport networks, the underlying optical fiber-based layer of telecommunications networks, have evolved from Digital cross connect system (DCS)-based mesh architectures in the 1980s, to SONET/SDH (Synchronous Optical Networking/Synchronous Digital Hierarchy) ring archit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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